garden squash plants produce white or yelloe squash. White color is dominant while yellow is recessice. A squash plant that is homozygous for white is crossed with a homozygous yellow one. Predict the phenotype of the F1 generation (first generation) and the f2 generation (F1*F1)

To predict the phenotypes of the F1 and F2 generations in a cross between a homozygous white squash plant and a homozygous yellow squash plant, we need to understand basic Mendelian genetics.

In this case, the trait under consideration is the color of the squash, with white being dominant and yellow being recessive.

1. F1 Generation:
When a homozygous white squash plant (WW) is crossed with a homozygous yellow squash plant (yy), the resulting genotype of the F1 generation will be Ww, where one allele is inherited from each parent.

The phenotype of the F1 generation will be white squash because the dominant white allele (W) masks the expression of the recessive yellow allele (y).

Thus, the F1 generation will have white squash plants.

2. F2 Generation:
To predict the phenotypes of the F2 generation, we need to consider the possible genotypes resulting from the F1 crosses.

In the F1 generation, all the plants will have the genotype Ww. When the F1 plants are self-crossed (F1 * F1), the resulting Punnett square can be used to determine the potential genotypes and phenotypes.

| W | w |
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W | WW | Ww |
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w | Ww | ww |
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From the Punnett square, we can see that the possible genotypes for the F2 generation are WW, Ww, Ww, and ww.

The corresponding phenotypes are:
- 75% white squash (WW or Ww)
- 25% yellow squash (ww)

Therefore, the predicted phenotypes of the F2 generation will be 75% white squash and 25% yellow squash.

Remember that these results are predictions based on Mendelian genetics, assuming that there are no other influencing factors or genetic interactions involved.